package dao;

import java.sql.Timestamp;
import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

import bean.Lucky;

/**
 * A data access object (DAO) providing persistence and search support for Lucky
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see bean.Lucky
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class LuckyDAO {
    protected static final Logger log = LoggerFactory.getLogger(LuckyDAO.class);
    // property constants
    public static final String OPEN_ID = "openId";
    public static final String LEVEL = "level";
    public static final String STATUS = "status";

    protected SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    protected Session getCurrentSession() {
        return sessionFactory.getCurrentSession();
    }

    protected void initDao() {
        // do nothing
    }

    public void save(Lucky transientInstance) {
        log.debug("saving Lucky instance");
        try {
            getCurrentSession().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }

    public void delete(Lucky persistentInstance) {
        log.debug("deleting Lucky instance");
        try {
            getCurrentSession().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }

    public Lucky findById(java.lang.Integer id) {
        log.debug("getting Lucky instance with id: " + id);
        try {
            Lucky instance = (Lucky) getCurrentSession().get("bean.Lucky", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }

    public List findByExample(Lucky instance) {
        log.debug("finding Lucky instance by example");
        try {
            List results = getCurrentSession().createCriteria("bean.Lucky")
                    .add(Example.create(instance)).list();
            log.debug("find by example successful, result size: "
                    + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }

    public List findByProperty(String propertyName, Object value) {
        log.debug("finding Lucky instance with property: " + propertyName
                + ", value: " + value);
        try {
            String queryString = "from Lucky as model where model."
                    + propertyName + "= ?";
            Query queryObject = getCurrentSession().createQuery(queryString);
            queryObject.setParameter(0, value);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find by property name failed", re);
            throw re;
        }
    }

    public List findByOpenId(Object openId) {
        return findByProperty(OPEN_ID, openId);
    }

    public List findByLevel(Object level) {
        return findByProperty(LEVEL, level);
    }

    public List findByStatus(Object status) {
        return findByProperty(STATUS, status);
    }

    public List findAll() {
        log.debug("finding all Lucky instances");
        try {
            String queryString = "from Lucky";
            Query queryObject = getCurrentSession().createQuery(queryString);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find all failed", re);
            throw re;
        }
    }

    public Lucky merge(Lucky detachedInstance) {
        log.debug("merging Lucky instance");
        try {
            Lucky result = (Lucky) getCurrentSession().merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Lucky instance) {
        log.debug("attaching dirty Lucky instance");
        try {
            getCurrentSession().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public void attachClean(Lucky instance) {
        log.debug("attaching clean Lucky instance");
        try {
            getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
                    instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public static LuckyDAO getFromApplicationContext(ApplicationContext ctx) {
        return (LuckyDAO) ctx.getBean("LuckyDAO");
    }
}